土壤—全方位深松机组系统随机振动研究

基金项目: 国家自然科学基金(10071048,1970102)和教育部高等学校骨干教师资助计划资助项目

Research on the Random Oscillation of Soil Bulk-Subsoiler System

摘要: 建立了土壤——全方位深松机非线性系统模型，分析了系统振动减阻的复杂内共振机理、土壤强度分维和负载信号特性，可以通过调整土壤耕作机组固有频率来改善振动减阻性能，以及利用牵引阻力频谱指数来衡量系统振动减阻性能。田间试验数据分析结果与上述结论相符。
- 全方位深松机 /
- 非线性切削力 /
- 频谱指数 /
- 1/f噪声
Abstract: The complex internal resonance mechanism for resistance-reducing by oscillation, fractal dimension of soil intensity and the characteristics of load signals are analyzed by means of soil bulk-subsoiler nonlinear system model developed by the author. The conclusions, to improve resistance-reducing capability in soil-tilling system by adjusting its natural frequency, and judge it by frequency-spectrum exponential of drag-resistance, are obtained. Meanwhile, these theoretical results are verified with the test data from field experiments.
- bulk-subsoiler /
- nonlinear cutting-force /
- frequency-spectrum exponential /
- 1/f noise